Is there an easy way to distinguish same-texture items assigned as memory slots?

[Twisted-Code]

On All the Mods 8, I decided to use a backpack to store my apotheosis gems, and since I have a decent supply of everything needed for a diamond backpack, I realized I could make one and preconfigured it so that any given gem would have its own slot.
However, I''m realizing one problem, in that I can't tell the empty slots apart when they are the same "type" but different quality of gem, which seems to have resulted in some slots being the same gem as other slots without me noticing. Short of trying (linear search style) every possible gem quality of that type (and if I had any to try, they would already be in the backpack) is there a way to tell exactly which item a slot is for? Ideally, get the tooltip corresponding to the saved NBT?
In my specific use case I don't think it much matters, since I plan to simply overwrite the incorrectly configured slot, but I thought I should ask in case this is something others might need to deal with. It's also borderline a feature request in the event there is no easy way.